Identify and discuss guidelines to follow when using photographs as visuals.

Photographs offer both functional and decorative value,and nothing can top a photograph when you need to show exact appearances.Because audiences expect photographs to show literal visual truths,you must take care when using image-processing tools.Photographs are often unmatched in their ability to communicate spatial relationships,sizes,shapes,and other physical parameters,but sometimes they communicate too much information.A simplified diagram is often more effective because it allows you to emphasize the specific parts that are relevant to the problem at hand.Learn how to use basic image-processing functions such as cropping and resizing.Make sure the photographs have communication value.Except for covers,title slides,and other special uses,it's usually best to avoid including photographs simply for decorative value.Be aware of copyrights and model permissions.As with textual information you find online,you can't simply insert online photographs into your documents.Unless they are specifically offered for free,you have to assume that someone owns the photos and is entitled to payment or at least a photo credit.